Pharmaceutical product.



WALTER KROPP, F ELBERFELD, GERMANY, ASSIGNOR TO SYNTHETIC PATENTS (10.,

INC. OF NEW YORK, N. Y., A CORPORATION OF NEW YORK'.'

PHARMACEUTICAL PRODUCT.

1,252,452. No Drawing. Application filed July 21, 1915, Se

To all whom it may concern:

Be it known that I, \VALTER KnoPP, doctor of philosophy, chemist, citizen of'the German Empire, residing at Elberfeld, Germany, have invented new and useful Improvements in Pharmaceutical Products, of which the following is a specification.

My invention'relates to the manufacture and production of new and therapeutically derivatives of phenols containing in the nucleus a substituent which has more than one carbon atom. My new products have the following general formula:

RC H -OCOR' R stands for a substituent having more than one carbon atom and containing for example an aromatic nucleus; R stands for xi .1q x X and X representing hydrogen or an alkyl, 6. 9. CH C H etc.

For producing my new products the free phenols or their derivatives or salts are converted into the carbamates or carbonates according to the usual methods. They are after being dried and pulverized whitish tasteless and odorless products generally soluble with difiiculty in water. They are valuable anthelmintic remedies which do not irritate the mucous membrane. An average single dose is from 1-2 grams.

In order to illustrate the new process more fully the following example is given, the parts being by Weight :85 parts of para-benzylphenol are dissolved in benzene together with 60 parts of dimethylanilin. The resulting solution is then added to300 parts of a per cent. phosgen solution in benzene. After 12 hours the benzene solution is shaken with cold hydrochloric acid and is allowed to run While being stirred into a cooled aqueous ammonia solution. The para-bcnzylphenylcarbamate having most probably the formula:

separates from the benzene solution, it is filter-ed oil and crysh'illizcd from alcohol. It melts at 144 C. and is soluble in ether.

valuable products being chemically carbonyl- Specification of Letters Patent.

Patented Jan. 8, 1918.

m1 No. 41,152. Renewed November 23, 1911. serial No.

Butylphenol at 123-12i (1.; the carbamate of para-isopropylphenol at 9395 C.; the para-butyl'phenyl N dimethyl carbamate at 92 (3.; the 0rtho-allylphenylcarbamate at 1252-123 C.

F or the purpose of this patent it is to be assumed that any products which may be obtained by treating the above mentioned phenols according to methods suitable and in use for the manufacture of carbonates and carbamates is within the class designated in this patent as carbamates ,and carbonates of phenols containing in the nucleus a substituent With more than one carbon atom, such being'in accordance with the present understanding as a chemist and such being the intended generic scope of this patent.

I claim g 1. As new products carbonyl derivatives of phenols containing in the nucleus a substituent which has more than one carbon atom and having the following general formula: I

' R-C H OCOR,

R standing for a substituent containing more than one carbon atom; R standing for -OC H R or x,

X and X representing hydrogen or an alkyl, which products are after being dried and pulverized whitish practically tasteless and odorless powders generally soluble with ditficulty in water; and being valuable anthelmintic remedies, substantially as described.

2. As new products carbonyl derivatives of phenols containing in the nucleus a substituent which has more than one carbon atom and having the following general formula:

R standing for a substituent having more than one carbon atta n, X and X representing hydrogen or aikyl, which products'are after being dried and pulverized whitish practically tasteless and odorless powders,

generally soluble with difiiculty in water; and being valuable anthelmintic remedies, substantially as described. 3. As new products carbonyl derivatives of phenols containing in" the nucleus a substituent which has more than one carbon atom and having the following general formula:

v RC H -OCO-R', ll standing fora substituent containing at least three carbon atoms; R standing for. I

X and X representing hydrogen or an alkyl, which products are after being dried and pulverized whitish practically tasteless and odorless powders generally soluble with difficulty in water; and being valuable anthelmint1c remedies, substantially'as described.

4. As new products carbonyl derivatives of 'phenolscont'aining in the nucleus a substltuent which has more than one carbon atom and having the fpllowing general formula R standing :for a substituent containing an aromatic nucleus; R standing for -OC,H -R

x! l N I X and X representing hydrogen or an alkyl,

which products are, after being dried and pulverized whitish practically tasteless and odorless powders generally soluble with dif- 40 ficulty in water; and bein valuable anthelmintic remedies;substantially as described.

5. 'As new products carbonyl derivatives of phenols containing in the nucleus a substituent which has more than one carbon atom and having the following general formula: 1

crystallizing from alcohol in crystals melting at 14:4: 0.; being soluble in ether; and being a valuable anthelmintic remedy, substantially as described. i

In testimony whereof I'have hereunto set my hand in the presence of two subscribing wltnesses.

WALTER KROPP. [In s.] Witnesses:

HELEN NUFER, ALBERT Num. 

